docs: Make sure utilities appear in TOC

sethaxen · sethaxen · commit db08381f84d7 · 2026-02-06T17:01:15.000+01:00
diff --git a/docs/src/api.md b/docs/src/api.md
@@ -54,7 +54,7 @@ loo_pit
 r2_score
 ```
 
-### Utilities
+## Utilities
 
 ```@docs
 PosteriorStats.kde_reflected
